Revealing a new region of gamma-ray emission in the vicinity of HESS J1825–137
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| Autores: | , , |
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| Formato: | artículo original |
| Fecha de Publicación: | 2019 |
| Descripción: | HESS J1825–137 is a bright very high-energy gamma-ray source that has been firmly established as a pulsar wind nebula (PWN), and one of the most extended gamma-ray objects within this category. The progenitor supernova remnant (SNR) for this PWN has not been firmly established. We carried out an analysis of gamma-ray observations in the region of HESS J1825–137 with the Fermi–LAT that reveals emission in the direction away from the Galactic plane. The region lies beyond the PWN and reaches a distance from the pulsar compatible with the supposed location of the SNR shock front. The spectrum of the gamma-rays is hard with a photon index of ∼1.9 in the 10–250 GeV range. Several scenarios for the origin of the emission are discussed, including the SNR as a source of high-energy particles and the ‘leakage’ of leptons from the PWN. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/90562 |
| Acceso en línea: | https://academic.oup.com/mnras/article/485/1/1001/5322176 https://hdl.handle.net/10669/90562 |
| Palabra clave: | ISM individual objects HESS J1825-137A ISM supernova remnants Gamma rays |